Roof greening culture substrate and preparation method thereof

Abstract

The invention provides a roof greening culture substrate which is prepared from landscaping waste, city living sludge and perlite. A preparation method of the roof greening culture substrate comprises the following steps: (1) firstly uniformly mixing the grinded landscaping waste and city living sludge to obtain a mixture, adjusting the water content of the mixture to be 55-65% and adjusting the mass ratio of carbon to nitrogen to be 25-30, carrying out forcible ventilation to for aerobic composting at a temperature of 50-60 DEG C, thus obtaining a composting product after the composting process; and (2) uniformly mixing the composting product and the perlite according to a volume ratio of (5-15): 1 to obtain the roof greening culture substrate. The common landscaping waste and city living sludge are applied to the roof greening culture substrate, thus being contributed to reducing the material cost of the roof greening culture substrate, improving the comprehensive utilization level of the natural resources, promoting the cyclic utilization of the landscaping waste and protecting the natural environment.

Description

(1) Technical field [0001] The invention relates to a roof greening cultivation substrate and a preparation method thereof, in particular to a roof greening cultivation substrate material prepared mainly by using landscaping waste and urban domestic sludge as compost materials and supplemented with perlite. (2) Background technology [0002] With the continuous expansion of the city area, a large amount of land is used to build high-rise buildings and modern factories. The urban heat island effect and air quality are increasingly affected by people's lives. Greening the city is becoming more and more important. Among them, the roof Greening is one of the forms of greening. Since the current roof greening substrates use pure soil, peat, perlite, sand, etc. as cultivation substrates, each substrate has its own disadvantages, such as high density of soil and sand, and the limited load-bearing of old roofs, which poses safety hazards. In addition, these inorganic The water and ...

AI Technical Summary

Problems solved by technology

However, this patent has the following disadvantages: 1. The main component of the patent matrix is ​​peat, and the price of peat is higher than that of waste materials. If it is put into production, the cost will increase

2. Among them, perlite and ceramsite are commonly used matrix components in gardening, and the price is higher than that of industrial and agricultural waste materials, which further increases the cost of this matrix

3. The sawdust and coconut peat used in this patent do not belong to mass waste. The scope and area of ​​such waste are limited, the quantity is relatively limited, the purchase and transportation costs are high, and the supply may be insufficient in the production chain, so it is not suitable Widely promoted nationwide

However, this patent has the following disadvantages: 1. Both peat and perlite are gardening cultivation materials, and peat is a non-renewable resource, which is expensive. If large-area green roofs cause roof greening costs are higher

2. Palm fiber is only produced in a few places, the quantity is relatively limited, the transportation cost is high, and the material price is relatively expensive, which is not suitable for large-scale roof greening

However, as a roof cultivation substrate, it is difficult to use one material to meet all plant growth needs and architectural requirements, so using a variety of materials to mix and match can be a good solution to this situation

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